Coherent, directional supercontinuum generation

doi:10.1364/OL.42.004466

2017-10-26

DOI：10.1364/OL.42.004466

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摘要

En 中文

We demonstrate a novel approach to producing coherent, directional supercontinuum and cascaded dispersive waves using dispersion engineering in waveguides. By pumping in the normal group-velocity dispersion (GVD) regime, with two zero-GVD points to one side of the pump, pulse compression of the first dispersive wave generated in the anomalous GVD region results in the generation of a second dispersive wave beyond the second zero-GVD point in the normal GVD regime. As a result, we achieve an octave-spanning supercontinuum generated primarily to one side of the pump spectrum. We theoretically investigate the dynamics and show that the generated spectrum is highly coherent. We experimentally confirm this dynamical behavior and the coherence properties in silicon nitride waveguides by performing direct detection of the carrier-envelope-offset frequency of our femtosecond pump source using an f-2f interferometer. Our technique offers a path towards a stabilized, high-power, integrated supercontinuum source with low noise and high coherence, with applications including direct comb spectroscopy. (C) 2017 Optical Society of America

Keyword:

DISPERSIVE WAVE EMISSION

FREQUENCY COMBS

OPTICAL-FIBER

GUIDE

BANDWIDTH

SOLITONS

PROFILE

BAND

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期刊

Optics Letters

IF:

3.3

论文数:

4.0W

被引数:

7.6W

机构

Columbia University

学者数:

7.1W

论文数: 6.4W

被引数: 263

Cornell University

学者数:

6.3W

论文数: 5.4W

被引数: 10.9W

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